Apparatus for preparing material for use in storage batteries.



Pate nted Feb. l8, i902.

r E. w. SMITH. APPARATUS FOR PREPARING MATERIAL FOR USE IN STORAGE BATTERIES.

(Application filed Sept. 26, 1900.)

(No Modei.)

"lllllllvli A llllfq 5 H- -EEW UNITED STATES PATENT, FFICE.

EDWARD WANTO- MITH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR To, THE ELEOTRIO STORAGE BATTERY COMPANY, .OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

APPARATUS FOR PREPARING MATERIAL FOR USE IN STORAGE BATTERIES.

SPECIFICATION forming part of Letters Patent No. 693,750, dated February 18, 1902. Application filed Septeinher 26, 1900.. Serial No. 3 1 1,162. (N model.)

1'0 all-whom it may concern.-

Be it known that I, EDWARD WANTON SMITH, acitizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Apparatus for Preparing Material'for'Use in Storage- Batteries, of which the following is a specification.

The invention relates to apparatusfor pre paring active material or-material to become activethat is to say, lead in a very fine state of subdivision, suitable to serve as the positive or negative electrode or plate of a storage battery-so as to facilitate the manufacturing of same in the'form of pellets for use' in secondary batteries, the object being to provide a machine for granulating the salts or. oxid of lead-for example, chlorid, the latter being a salt consisting of chlorin and a base.

The invention consistsin the improved granulating-machi-ne, and in'the novelfeatures of construction thereof; as will be here- 3 is an edge view,-and Fig. 4: is a sectional] inafter described. and pointed out in the claims. 1

showing-the screw-shaft, propelling-blade, and-perforated di'aphragms.

I Fig. 2 is a face view of the propellingjblade r paddle. Fig.

- ,view thereofon the lines 4 of Fig. 2pm a larger scale. Figs. 5 and '6 are details of=the perforated diaphragm. ,Fig. 7 is a modified form ofdiaphragmx. I

Re ferring'to the drawings,;1 indicates a horizontally-disposed cylindrical casing i-ntegral with or. otherwise mounted. upon a support 2, having an upright 3 to provide an additional'bearing for a shaft 4, journale'd in the. casing and adapted forv rotation, as by means of the pulley The casingll has-a;- flari-ng hopperi t3, ar-

ranged as showaudie. closed at its outer end by two perforated disks, dlaphragms,' or

hanging working edges. forined by the slopdoughy mass of the consistency of soft cheese and is worked or forced toward the outer end -.openings. 10' in snake-like particles. This sieves 7 and 8. Said diaphragms are superimposed one upon the other, and the former is provided with a plurality of tiny orifices 9, symmetrically arranged, and 'the plate 8 is provided with relativelylarge perforations 10. The object of superimposing the diaphragms and having the smaller openingson the inside is to cause the material to pass through and be cut or granulated by the small openings and thento pass freely away through the larger openings. Instead of the diaphragms 7 and 8 I may employ the single diaphragm illustrated in Fig. 7, which is shownas being provided withconicalopenings 0c, the walls of which slope outwardly.

The sieves 7 and 8 fit in an annular groove ll, provided for thepurpose, and-are secured 8o ing surfaces 16 operate to push the material through the perforationsin the plates in contradistinction to the function of the ordinary knife or scraper.

, The chlorid is introduced in'a spongy or by-the feed-screw 13, where it is taken'up by the propeller or blade 14 and forced through the orificesi), so that it issues fromthe larger 0 granulating treatment of the chlorid causes it to assumeahigh degree of coherence, so

that it can'jreadily be made up into agglom-' crate or pellet form.

- It will, be obvious to those skilled in the at to which it appertains that modifications may be made in de'tailwithout departing from the spirit and scope of the invention. Hence I do not limit myself to the precise construction mo disks, whereof one is provided with small I 5 and the other with large openings, said second plate acting as a support for the first, and revolubie propeller-blades having overhanging working edges, "which push the materialthrough the openings in the plates, substan- 2o tially as described.

y In testimony whereof I have hereunto signed my name.

EDWARD WANTQN SMITH.

In presence of W. J, JACKSON, K. M. GILLIGAN. 

